<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>订单管理</el-breadcrumb-item>
      <el-breadcrumb-item>订单列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片渲染区域-->
    <el-card>
      <!--2. 创建 echarts 的 html 元素-->
      <div id="main" style="width: 800px; height: 400px">

      </div>
    </el-card>
  </div>
</template>

<script>
// 1.导入 echarts
// import echarts from 'echarts'
// 上面的方式报错，下面两种都可以
// const echarts = require('echarts')
import * as echarts from 'echarts'

// 导入 rodash
import _ from 'lodash'

export default {
  name: "Report",
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {
  },
  // 当 dom 全部初始化完毕，加载这个钩子函数
  async mounted() {
    // 3.基于准备好的 dom,初始化 echarts 实例
    let myChart = echarts.init(document.getElementById('main'))

    // 3.1.从接口中获取数据
    const {data:res} = await this.$http.get('reports/type/1')

    if (res.meta.status !== 200) {
      return this.$message.error('获取折线图数据失败')
    }

    // 4.准备数据和配置项
/*    let option = {
      title: {
        text: 'ECharts 入门示例'
      },
      tooltip: {},
      legend: {
        data:['销量']
      },
      xAxis: {
        data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
      },
      yAxis: {},
      series: [{
        name: '销量',
        type: 'bar',
        data: [5, 20, 36, 10, 10, 20]
      }]
    }*/

    // 4.1.处理合并折线图的数据
    // console.log(res.data)
    const result = _.merge(res.data, this.options)

    // 5.展示数据
    myChart.setOption(result)
  },
  methods: {

  }
}
</script>

<style lang="less" scoped>

</style>